Improve esploras scalability

[saidalaoui-sq]

Overview

Implementation of the proof of concept for the solution proposal of setting up Esplora as two separate services: Readers and Writer services:

• Adds readonly argument to allow current instance to access RocksDB tables in EFS in read-only mode.
• Updates implementation to prevent write operations against RocksDB tables in case the current instance is in readonly mode.
• Updates implementation to close and re-open connection to RocksDB tables as a work around for invalidating cache.

Testing

Deployed to Esplora Dev environment.

• Verified tip is in sync with known Signet tip verified through mempool.space

curl --location 'https://development.e.r.cequals.xyz/blocks/tip/hash'
000000489bba27e69140ba5bff07321230a875babcf57b7c350442b4d5d2d7f7%

• Using mempool.space, verify transactions's data

~ curl --location 'https://development.e.r.cequals.xyz/tx/12a32c2d834248576f9dd05f3738c9f09ee7993794daf1ef080b765b17d4ecc0'
{"txid":"12a32c2d834248576f9dd05f3738c9f09ee7993794daf1ef080b765b17d4ecc0","version":2,"locktime":214052,"vin":[{"txid":"7b505c9c4e67b66f453ab023135dae73295ce6a92ee6235fbb1d02da8d5cf4bf","vout":2,"prevout":{"scriptpubkey":"0014aaab3dcb9fa15f146512a07564e801ffcb5b8966","scriptpubkey_asm":"OP_0 OP_PUSHBYTES_20 aaab3dcb9fa15f146512a07564e801ffcb5b8966","scriptpubkey_type":"v0_p2wpkh","scriptpubkey_address":"tb1q424nmjul5903gegj5p6kf6qpll94hztx5y9gjg","value":385772},"scriptsig":"","scriptsig_asm":"","witness":["3044022072831444fbd3dd2682a0acd7e110e6f5ff1915a047adaf916b75abfa2c7be896022001fd20fecc576fe5dc1c2323e7f07f625cee674fab6be44d96c1dc8a6d31f00701","0371c269349709a43d4ce008e11a055e461ff00100f771e348a6c1c4b84e2cebf7"],"is_coinbase":false,"sequence":4294967293},{"txid":"11dbb837929d8a86d041c38a433b5d72bb4c72ed495f0ca5abb7b68256cb1c1f","vout":0,"prevout":{"scriptpubkey":"00141335a6c31f8f3bcbd2598273b8c5ce87abe9f7a1","scriptpubkey_asm":"OP_0 OP_PUSHBYTES_20 1335a6c31f8f3bcbd2598273b8c5ce87abe9f7a1","scriptpubkey_type":"v0_p2wpkh","scriptpubkey_address":"tb1qzv66dscl3uauh5jesfem33wws747naapcgt4c5","value":199999140},"scriptsig":"","scriptsig_asm":"","witness":["3044022039026234629872ed58c27adea4db96daa2d45829a00c37eb3b1294f9a59ee69602200da5cc0f85e366dfd4e779a62378d5b2645c0dc8f9e35f8f99ec36bce2c5adc901","020a07ecd4277bc65a98dde7506065e1bbcdd5e890189ecd3d80f867bc44e778e5"],"is_coinbase":false,"sequence":4294967293},{"txid":"41129dae7d8d0481ea82e699ed6ba87484570df0c1c5951f38150caa48af5773","vout":0,"prevout":{"scriptpubkey":"00141335a6c31f8f3bcbd2598273b8c5ce87abe9f7a1","scriptpubkey_asm":"OP_0 OP_PUSHBYTES_20 1335a6c31f8f3bcbd2598273b8c5ce87abe9f7a1","scriptpubkey_type":"v0_p2wpkh","scriptpubkey_address":"tb1qzv66dscl3uauh5jesfem33wws747naapcgt4c5","value":12499151},"scriptsig":"","scriptsig_asm":"","witness":["30440220188092d8c92bf3947870ac9db3698e0d564c5d7173452d286572020b5791b02b02206ff5cf6c200f1a2132c668bc53e135acb8c748ac04ab1cf8e97eb455065267d001","020a07ecd4277bc65a98dde7506065e1bbcdd5e890189ecd3d80f867bc44e778e5"],"is_coinbase":false,"sequence":4294967293},{"txid":"ca16949665999530440cb31da86091c98ad84a42f78b56195bb4df75b2f1393e","vout":0,"prevout":{"scriptpubkey":"00141335a6c31f8f3bcbd2598273b8c5ce87abe9f7a1","scriptpubkey_asm":"OP_0 OP_PUSHBYTES_20 1335a6c31f8f3bcbd2598273b8c5ce87abe9f7a1","scriptpubkey_type":"v0_p2wpkh","scriptpubkey_address":"tb1qzv66dscl3uauh5jesfem33wws747naapcgt4c5","value":99999145},"scriptsig":"","scriptsig_asm":"","witness":["30440220133e40b4446b6f67281b888b2884585be465b5ce508a9f5657948444a71d5733022008f6f0ccb2d3afc0a4ff58472abdbae66dc13ae96c249b5bb8060b7f07bc41b901","020a07ecd4277bc65a98dde7506065e1bbcdd5e890189ecd3d80f867bc44e778e5"],"is_coinbase":false,"sequence":4294967293}],"vout":[{"scriptpubkey":"51201f3365c8af420f3243be272cff3bdcc3be470d350bd5f04602a952fa19af7b65","scriptpubkey_asm":"OP_PUSHNUM_1 OP_PUSHBYTES_32 1f3365c8af420f3243be272cff3bdcc3be470d350bd5f04602a952fa19af7b65","scriptpubkey_type":"v1_p2tr","scriptpubkey_address":"tb1pruektj90gg8nysa7yuk07w7ucwlywrf4p02lq3sz49f05xd00djscyt2fw","value":200000000},{"scriptpubkey":"00149237ac6e6630e71525e162e34deda5e26e3db93b","scriptpubkey_asm":"OP_0 OP_PUSHBYTES_20 9237ac6e6630e71525e162e34deda5e26e3db93b","scriptpubkey_type":"v0_p2wpkh","scriptpubkey_address":"tb1qjgm6cmnxxrn32f0pvt35mmd9ufhrmwfm4n3t5c","value":382766},{"scriptpubkey":"51204a6041f54b8cf8b2d48c6f725cb0514e51e5e7e7ac429c33da62e98765dd62f3","scriptpubkey_asm":"OP_PUSHNUM_1 OP_PUSHBYTES_32 4a6041f54b8cf8b2d48c6f725cb0514e51e5e7e7ac429c33da62e98765dd62f3","scriptpubkey_type":"v1_p2tr","scriptpubkey_address":"tb1pffsyra2t3nut94yvdae9evz3feg7tel843pfcv76vt5cwewavtesl3gsph","value":100000000},{"scriptpubkey":"51204a98aa12ded9f6c53e2164b90dd95d38f4be1c342ceec770c7d62d1844217cec","scriptpubkey_asm":"OP_PUSHNUM_1 OP_PUSHBYTES_32 4a98aa12ded9f6c53e2164b90dd95d38f4be1c342ceec770c7d62d1844217cec","scriptpubkey_type":"v1_p2tr","scriptpubkey_address":"tb1pf2v25yk7m8mv203pvjusmk2a8r6tu8p59nhvwux86ck3s3pp0nkqt30dvt","value":12500000}],"size":764,"weight":1766,"fee":442,"status":{"confirmed":true,"block_height":214053,"block_hash":"0000010e60378c98da211547794df53e6b255b1995f33b43763415f5b59bd38c","block_time":1726839113}}%